SANJAYKUMAR Member since 2011 5 posts
Cognizant Technology Solutions Pvt Ltd
Posted: September 8, 2016
Last activity: September 12, 2016

Asynchronous request processor --

A JMS MDB service is configured to consume incoming messages asynchronously though a service request processor rule. It is configured to use the out of the box SYSTEM-QUEUE-EXECUTIONREQUEST-SERVICE-DEFAULT and ProcessServiceQueue agent.


Messages remains stuck in the SYSTEM-QUEUE-EXECUTIONREQUEST-SERVICE-DEFAULT queue with 0 attempts from the agent and a InstanceNotFound exception is logged by the agent.





1. Configure a JMS MDB service to process messages asynchronously using a request processor rule from the default SYSTEM-QUEUE-EXECUTIONREQUEST-SERVICE-DEFAULT queue;
2. Put a message on the JMS queue and wait it is consumed by the Pega JMS MDB listener;
3. Open the SMA and display the SYSTEM-QUEUE-EXECUTIONREQUEST-SERVICE-DEFAULT queue: some messages remains stuck in the queue with 0 attempts.


Error Message :


2016-09-07 10:44:24,258 [fault (self-tuning)'](    async.agent.QueueProcessor) WARN    - Failed to dequeue item: SYSTEM-QUEUE-EXECUTIONREQUEST-SERVICE-DEFAULT 1473254199146000207DB72CC168D1FE17F1ABFF2C4561A0 for processing; InstanceNotFound    Queue    SYSTEM-QUEUE-EXECUTIONREQUEST-SERVICE-DEFAULT    SYSTEM-QUEUE-EXECUTIONREQUEST-SERVICE-DEFAULT 1473254199146000207DB72CC168D1FE17F1ABFF2C4561A0;    at com.pega.pegarules.session.internal.async.agent.QueueManagerImpl.dequeue(;    at com.pega.pegarules.session.internal.async.agent.QueueManagerImpl.dequeue(;    at com.pega.pegarules.session.internal.async.agent.QueueProcessor.execute(;    at;    at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(;    at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(;    at;    at com.pega.pegarules.session.internal.engineinterface.service.RequestProcessorImpl.processServiceRequest(;    at com.pega.pegarules.session.internal.engineinterface.service.RequestProcessorImpl.processQueue(;    at com.pegarules.generated.activity.ra_action_processqueue_220a7c569860841f205ded64d7e39ca5.step1_circum0(;



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